package servlet;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;


public class BaseServlet extends HttpServlet {
    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //获取路径uri
        String requestURI = req.getRequestURI();
        //获取方法名
        String methodName = requestURI.substring(requestURI.lastIndexOf("/") + 1);
        //使用反射执行对应的方法
        //获取类对象
        Class<? extends BaseServlet> aClass = this.getClass();
        try {
            //根据类对象获取方法对象
            Method method = aClass.getMethod(methodName, HttpServletRequest.class, HttpServletResponse.class);
            //执行方法对象
            method.invoke(this, req, resp);
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    }
}
